What is semi-log graph paper used for?
Semi-log graph paper is used when one value changes exponentially while the other changes linearly. It is common in science labs, engineering measurements, population growth, radioactive decay, and frequency response work.
Which semi-log PDF should I download?
Use the 1-cycle template for a compact range, 2-cycle for medium-range data, and 3-cycle when values span several orders of magnitude. The A4 portrait 3-cycle template is the safest general-purpose choice.
How do I print the PDF at the correct size?
Print the PDF at Actual Size or 100% scale. Avoid Fit to Page if you need accurate spacing for measurement or lab work.